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Archduke Franz Ferdinand, who was prince in Austria-Hungary, was assassinated by a Serbian named Gavrilo Princip.
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Austria-Hungary asks for retribution, Serbia denies.
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Austria-Hungary declares war on Serbia.
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Germany declares war on Russia.
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Germany declares war on France due to the Schlieffen Plan.
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Britain declares war on Germany.
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The German army is stopped by Britain and France before going into Paris. Trench warfare begins for four years.
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The Allies defeat Germany at the Battle of Ypres.
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The Ottoman Empire declares war on The Allies.
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There is an unofficial truce made for Christmas.
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The Allies attack the Ottoman Empire at the Battle of Gallipoli, ending in a victory for the Ottomans and a retreat for The Allies.
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Germans sink the British cruise ship, the Lusitania, and this causes the US to join the war against Germany.
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Bulgaria declares war on Serbia.
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France and Germany fight until December of 1916, causing a victory for the French.
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The British intercept the Zimmerman Telegram, which asks Mexico to fight with the Germans, and the US declares war on Germany.
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President Woodrow Wilson issues the Fourteen Points to help establish peace and no more war.
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The US officially joins the war against Germany.
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This begins and will end on August 6, as a victory for The Allies.
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Germany agrees to an armistice and fighting ends.
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With the Treaty of Versailles being signed, WWI officially ends.